Key machine



June 28,1927. v 1,634,133

H. BEISSER KEY MACHINE Filed Feb. 14, 1925 3 Sheets-Sheet].

June 28, 1927, H. BEISSER 1,63 ,133

KEY MACHINE F' il'ed Feb. 14. 1925 3 Sheets-Sheet 2 v V 1,634133 June28, 1927. H. BEISSER KEY MACHINE Filed Feb. 14. 1925 3 Sheets-Shari g YZ I NVEIYTOR.

7 ATTORNEY.-

Patented June 28, 1927.

. UNITED STATES HAFBY BEISSEB, OI DETROIT, MICHIGAN.

KEY MACHINE.

'- Application fled February 14, 1025. Serial No. 9,094.

-My invention relates to key machines, shown in the accompanyingdrawings and more particularly described in the followingspecification'and claims.

The primary object of this invention is an improvement upon thatdescribed in my pending application for patent, Serial No. 625,453,filed March 16, 1923.

One feature of this invention consists in means for cutting the wardgrooves in malleable keys, also in'providing adjustable and slidablemeans for bringing the key blank into proper position for forming theward groove.

A further obj ect. of the invention is to provide means for cuttingdouble bit keys the arrangement being such that the shank of the key isgripped by the vise so that the distance from the center of the shank tothe outside of the bit is the same as in the pattern key-a'recess beingprovided in the vise to receive one of the hits while theother bit isbeing cut.

A further object of the invention is a swinging and sliding visesupporting frame the construction being .such that it is adapted toswing over the guide posts aligned with the respective cutters-that itmay be shifted from the extreme left to the extreme right hand side ofthe machine, or vice-versa, as required.

Another feature of the invention relates to the duplex guide,corresponding with the duplex cutter, whereby grooves may be formed inboth sides and outer edges of the key bit.

Another feature consists in the means provided for alternately lockingthe high and low speed pulleys to the shaft. 1 Another feature consistsin the means for moving the key vise in the frame for cutting edgegrooves in Yale or like constructed eys. With the foregoing and otherobjects inappear as the description.

- sheet.

- ing away to accommodate the view upon the Figure 2 is an end elevationof the machine showing parts in cross-section taken on or about line2-:2 of Figure 1 to more clearly disclose the construction.

Figure 3 is a fragmentary perspective view showing the vise for holdingdouble bit keys. 1

Figure 4 is a fragmentary perspective View of the lower member of thevise, shown pulleys to the drive shaft.

Figure 7 is a perspective view of the vise for holding the key blankwhen cutting ward grooves.

Figure 8 isan end elevation partly in and re easing the high and lowdriving cross-section taken on or about line 2-2 of Figure 1, showingthe laterally slidable frame carrying the key and key blank Vises at theouter limit of its movement as distinguished from the position shown inFigure 2-the view also shows in dotted lines the Vises and frame tiltedthat they may pass the guide post in travelling from the extreme rightto left-hand side of the machine or vice-versa.

Figure 9 is a cross-sectional view through the vise shown in Figure 7,showing a key bit clamped between its adjustable jaws.

Referring now to the letters of reference placed upon the drawings Aindicates the bed frame of the key machine which may be bolted to atable, bench or other suitable supportnot shown.

B denotes a movable frame adapted to slide laterally in the bed frame A,consisting of a pair ofend rails B ---having inwardly directed flanges Bextending into transverse grooves formed in the end walls of the bedframe,coupled together by rods B, B B, to which-they are rigidlysecured.

C designates a duplex vise frame pivoted to the rod B and slidablethereon having a channel groove on the underside of its free end toreceive the rod B upon which the frame rests. Integral with the frame Cper extension of the posts 0 C Thelower stationary jaws of each vise isprovided with a serrated recess-as indicated at 0 to receive the shankof a key; the post is also cut away as indicated at c to receive one ofthe bits of a double bit key.

D, D, indicate a pair of thumb screws extending through the movable visejaws to engage the respective stationary posts. Sleeved upon the thumbscrews are springs D -the purpose of which is to open the movable jawwhen the nuts are adjusted to release the key, or key-blank grippedbetween the jaws. c

E, E E denote rotary cutting tools spaced apart upon a shaft F,supported in suitable bearings G, extending upwardly from the bed frame.

H and H designate high and low speed driving pulleys mounted upon theshaft G.

I indicates a longitudinal slidable key lodged in a groove formed in thedriving shaft adapted when shifted to alternately lock the respectivepulleys H and H to the driving shaft.as indicated in full and dottedlines in Figure 6. F indicates a flange formed on the shaft F grooved toreceive a split ring 7 to secure the slidable key 1, against accidentalrelease. F denotes a nut engaging the end of the shaft to retain thedrivingpulleys H and H upon the shaft.

Secured to one end of theshaft F is a tool E adapted to cut ward groovesin malleable keys.

Mounted in a slot formed in the end rail B and co-operating with thecutter E is a key vise J comprising two jaws J, J*, connected togetherby pins J J secured to one of the walls and projecting into aperturesformed in the Wall of the adjacent aw. K denotes a bolt fitted with awing nut for adjusting the jaws toward each other, whereby theiropposing inclined flanges J J, are adapted to grip a malleable key bit Zresting upon the upstanding rib J. J indicates a spring mounted upon thescrew bolt K adapted to force the jaws apart when released by theadjustment of the thumb nut.

wall of the frame B in which the vise is mounted.

It will be obvious that the relative posi- To secure the vise in theslot, formed in tion of the vise in the end frame may be readilyadjusted by the insertion of shims of varying thicknesses.

M, M M denote slotted channel ways formed on the top of the baseplate-and N, N N are adjustable posts provided with a bolt projectingthrough the slotted channels, fitted with a nut to secure the post whenadjusted. Adjustably mounted lgFOIl the top of the respective posts N, N

are stylus or guide members N, N", N,

corresponding with the cutting edges ofthe operating stylus along thenotched edge of the pattern key.

Having now indicated the several parts by reference letters theconstruction and operation of the device will be readily under-' stood:

It will be noted that the duplex cutting tool E is provided with twoperipheral cutting'edges spaced apart adapted to simul- 'taneously outtwo notches in the bit of a key blank'the tool is also formed withannular cuttin,g)- edges to cut grooves in the sides of the t, thestylus or guide member N is laterally adjustable in its longitudinallyadjustable supporting post and when properly set in alignment with thecutting tool will require no further adjustment., The stylus N hasspaced projecting fingers n, n, adapted to enter the grooves of thepattern key. These fingers correspond with the spaced peripheral cuttingedges of the tool E,the fingers n, n, are also provided with laterallyextending portions n 19, designed to enter side grooves in a key bit.These extensions conform to the annular cutting edges projecting inopposite directions from the sides of the cutting tool.

The cutting tool E is designed to cut grooves such as are indicated inthe key in Figure 1 and the corresponding stylus N has a finger adaptedto enter the groove in the pattern key. The beveled edge of the cuttingtool E and its corresponding stylus is designed for duplicating theV-shaped edges of keys of the Yale type.

To duplicate a pattern key the latter is secured between the jaw formedby the post C and movable jaw C carried by the vise frame while the keyblank is secured between the jaws formed by thepost C and C". The viseframe is then tilted as indie cated in dotted lines in Figure 8andshifted to a position opposite the proper stylus so that the finger ofthetlatter may enter the groove in the pattern key. The laterallymovable frame B is-then pushed toward the stylus and cutting tool, thatthe cutting tool previously set in motion through one of the drivingpulleys may cut notches in the key blank corresponding with those in thepata key blank are clamped in the proper supporting vises. The viseframe is then shifted so as to be in alignment with the cutting tool Eand its stylus. If necessary to adjust the frame the latter may betilted as indicated is dotted lines in Figure 8 to pass over the stylussupporting posts. When lowered the lever O is raised so that the pin Penters a groove 2 provided in the vise frame for its reception. Theoperator may then by a slight movement of the lever adjust the viseframe along its supporting rods so as to cause the wedge-shaped stylus Nto follow the contour of the pattern key while forcing the key blankinto contact with the cutting tool through the lateral movement of theframe B.

As shown in Figures 3 and 4 the 'vise frame is adapted to support a keyof the double bit typethe lower portion of the frame being cut away asindicated at c to receive one of the hits while the other is beingmilled by the rotary cutting tool.

Having thus described my invention what I claim is: V

1. A key milling machine, com rising a shaft having cutters; a plurality0 supports on which are positioned inde endently adj ustable guides; amanuall adjust-able frame movable transversely to t e cutter shaft; a

secondframe hinged toand longitudinally 'slidable upon the first namedframe and adapted toswingbackwardly and forwardly V to clear the guidesand to position at the desired guide, and a manually operated swinginglever adapted to be detachably engaged with the hinged frame whereby thelatter may be shifted longitiidinally with reference to the first namedframe.

2. A key milling machine, comprising a shaft having a cutter, adapted tocut ward grooves in a key bit; a manually adjustable frame movabletransversely to the cutter shaft; a vise, adapted to co-ordinate withsaid ward cutter lodged in the wall of the transversely movable fi-ame,comprising a pair of adjustable jaws having opposing inclined surfacesfor gripping a key blank; a screw for adjusting the jaws toward eachother to grip the key blank and a spring to force the jaws apart whenreleased by the screw.

3. A-key milling machine comprising a shaft-having a cutter, adapted tocut ward grooves in a key bit; a manually adjustable frame movabletransversely to the cutter shaft; 2. vise mounted directly upon themanually adjustable frame co-ordinating with said ward cutter adjustablylodged in the wall of the transversely movable frame, and

a screw extending through the wall of the frame adapted to act upon thevise to secure.

it in the frame when adjusted.

l. A key milling machine, comprising a shaft having a cutter, adapted tocut ward grooves in a key bit; a manually adjustable frame movabletransversely to the cutter shaft; a vise/mounted directly upon thetransversely movable frame, adapted to co ordinate with said ward cutterlodged in the wall of the transversely'movable frame, comprising a pairof adjustable jaws having opposing inclined surfaces for gripping a keyblank; an upstanding rib between the movable jaws upon which the keyblank is adapted to rest; guide pins extending from one jaw intoapertures provided in the opposing jaw; a screw for adjustin the jawscorrespondlng with the cutting surfaces of said cutters, a frame movabletransversely of said cutters, a vise frame carried by and longitudinallyslidable upon said transversably movable frame and having a groovetherein, key and key blank holding devices carried by said vise frame, alever fixed on said bed frame to allow vertical and longitudinalmovement thereof, a pin on said lever adapted to engage the groove insaid frame upon vertical movement of the lever and to move said viseframe longitudinally with respect to the cutters upon longitudinalmovement of said lever. V 1

In testimony whereof, I sign this specification. HARRY BEISSEB.

